单词	octagon
释义	octagonoctagon /ˈɑktəˌgɑn/ noun [countable] Etymology ETYMOLOGYoctagon Origin: 1500-1600 Latin octagonum, from Greek, from okta- eight + -gonon -gon math, geometry a flat shape with eight sides—octagonal /ɑkˈtægənl/ adjective:  an octagonal room
随便看	DNA profiling DNA replication DNA sequencing do DOA doable d.o.b. Doberman pinscher doc docent docile docilely docility dock docket docking station dockside dockworker dockyard doctor doctoral doctorate Doctor of Philosophy doctor's degree doctrinaire

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